Nena was an ancient minor supercontinent that consisted of the cratons of Arctica, Baltica, and East Antarctica. Forming about 1.8 billion years ago, the continent was part of the global supercontinent, Columbia. Nena is an acronym that derives from Northern Europe and North America.
- Sankaran, A. V., The Supercontinent Medley: Recent Views. Current Science, 2003-08-25.
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